2026 Open House photos
10/05/2026A big thank you to everyone who joined us on October 3 for...
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The Downers Grove Sanitary District
We were organized in 1921 under the State of Illinois’ Sanitary District Act of 1917. Today we provide sewer service and wastewater treatment to more than 60,000 people, which includes 20,000 residential, commercial, industrial, and institutional customers. We operate and maintain a sewer system with over 250 miles of sewer main, and a Wastewater Treatment Center with a design average capacity of 11 million gallons per day.
What We Do
The Downers Grove Sanitary District
We were organized in 1921 under the State of Illinois’ Sanitary District Act of 1917. Today we provide sewer service and wastewater treatment to more than 60,000 people, which includes 20,000 residential, commercial, industrial, and institutional customers. We operate and maintain a sewer system with over 250 miles of sewer main, and a Wastewater Treatment Center with a design average capacity of 11 million gallons per day.
What We Do
The Downers Grove Sanitary District
We were organized in 1921 under the State of Illinois’ Sanitary District Act of 1917. Today we provide sewer service and wastewater treatment to more than 60,000 people, which includes 20,000 residential, commercial, industrial, and institutional customers. We operate and maintain a sewer system with over 250 miles of sewer main, and a Wastewater Treatment Center with a design average capacity of 11 million gallons per day.
What We Do
Sewer Problems? Call (630) 969-0664
Our technicians are available at all hours to help you.
Office temporarily closed Oct. 7
10/05/2026The District’s Administration Center will be temporarily closed on Wednesday, Oct. 7 from...
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Join us for our Sept. 22 Board of Trustees meeting
09/21/2026Join us on Tuesday, Sept. 22, 2026 at 5 p.m. for our Board...
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Government
As a unit of local government, we are committed to serving the community by protecting public health and the environment. Learn more about the people and policies that make this possible.
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Wastewater Treatment Center
When you wash your hands, flush the toilet, wash dishes, and run the laundry, all of the dirty water ends up at our Wastewater Treatment Center. It’s our job to clean that water and return it to the environment.
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Biosolids
We not only clean the dirty water you send us, but we put the solids to good use too! The District processes the organic material into something called Biosolids, a free and natural fertilizer available to you.
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Education
Does it matter what you flush? Have you ever wondered what a Wastewater Treatment Center looks like? How exactly does a sewer work? Discover more below.
Educational OpportunitiesHow To Maintain Your Sewer LineExternal Resources